The SHARP EL-546XTBSL is twin powered (solar & battery backup). Advanced 2 line scientific calculator with Direct Algebraic Logic (D.A.L.) display, allows calculations to be displayed as written on paper display. Perfect for students studying general math & science, pre-algebra, algebra I & II, geometry, trigonometry, statistics, biology, chemistry, and physics. Features include: 6 modes: normal, stat, complex, matrix, list, & equation; 8 temporary & 4 formula memory buttons; quadratic & cubic equation solvers; 3 variable linear equation solvers; 1 & 2 variable statistics; and physical constants & metric conversions. Durable, gloss black finish with white accents. Protective hard case. 3-5?16"W × 5-5?16"H × 5?8"D.